当她未能回家时，她的父母发出了警报。

Her parents ___raised ___the ___alarm when she failed to return home.

一位当地医生最先对这种最新病毒发出了警告。

A local doctor was the first to ___raise ___the ___alarm about this latest virus.

当地居民注意到工厂的化学品泄漏后，迅速发出了警报。

Local residents quickly ___raised ___the ___alarm after noticing chemical leaks from the factory.